6 citations
,
June 2013 in “British Journal of Dermatology” Intense pulsed light treatment mainly damages pigmented hair parts but spares stem cells, allowing hair to regrow.
January 2000 in “Optics Letters” Laser treatment can inhibit hair growth and different hair colors reach different temperatures when lasered.
12 citations
,
October 2023 in “Tissue Engineering and Regenerative Medicine” 
September 2023 in “Journal of The American Academy of Dermatology” People were generally happy with the home light therapy devices for hair loss.
January 2005 in “Seibutsu Butsuri/Seibutsu butsuri” Chemical treatments damage hair more than UV exposure, making it thinner and less flexible.
28 citations
,
December 2011 in “Biocatalysis and biotransformation” PDI helps restore over-bleached hair's strength and structure by attaching special peptides.
January 2025 in “Archives of Dermatological Research” 7 citations
,
March 1990 in “Pigment Cell Research” Certain chemicals cause hair graying in black mice but not yellow mice.
1 citations
,
March 2025 in “Journal of Cosmetic Dermatology” Exosomes and laser therapy can help regrow and repigment hair.
March 2007 in “International Journal of Cosmetic Science” Hair with more melanin resists weather damage better.
7 citations
,
January 2003 in “Journal of cosmetic and laser therapy” The filterless flashlamp-based system effectively delays hair regrowth and improves skin condition.
74 citations
,
July 1995 in “PubMed” Lowering homocyst(e)ine levels can reverse skin and hair lightening by restoring enzyme activity needed for pigmentation.
January 2024 in “Uttar Pradesh journal of zoology” Chemical treatments severely damage hair cuticles, especially in previously treated hair.
1 citations
,
January 2010 in “Biophysical journal” Hair fluorescence intensity can measure radiation exposure effectively.
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” Pulsed red light boosts collagen and energy in cells faster than continuous red light.
217 citations
,
February 2009 in “The FASEB Journal” Gray hair is caused by hydrogen peroxide buildup, which damages hair color repair.
February 2022 in “Veterinary record case reports” Light therapy successfully treated a dog's hair growth problem without side effects.
March 2026 in “Mendeley Data” March 2026 in “Mendeley Data” 
8 citations
,
February 2017 in “Archives of Dermatological Research” Intense pulsed light treatment effectively reduces underarm hair by making hair follicles smaller and extending their resting phase.
14 citations
,
September 2016 in “Journal of Photochemistry and Photobiology B Biology” UV exposure damages hair, increasing thiols and altering protein structure.
4 citations
,
April 2014 in “Lasers in Surgery and Medicine” TRASER effectively targets blood vessels and hair follicles for potential use in vascular and hair removal treatments.
November 2025 in “International Journal of Advanced Research” Platelet-rich plasma therapy effectively treated laser-induced skin lightening.
85 citations
,
January 2002 in “Dermatologic Clinics” Lasers and intense pulsed light can safely and effectively remove hair by targeting hair follicles.
9 citations
,
September 2009 in “Journal of Cutaneous Medicine and Surgery” UV light causes skin color loss in bald areas; wear a cap and use sunscreen.
10 citations
,
March 2024 in “Frontiers in Bioengineering and Biotechnology” Photothermal hydrogels can kill bacteria and help heal tissue using light-converted heat.
May 2010 in “Europe PMC (PubMed Central)” Near-infrared probes can safely and effectively image cysteine protease activity for disease diagnosis.
1 citations
,
August 2018 in “Dermatologic Surgery” 20 citations
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December 2006 in “Archives of dermatology” October 2013 in “CRC Press eBooks” Low-level light therapy is used in cosmetics and dermatology to repair skin, reduce inflammation, and treat various skin conditions.